Here Drive+ really bad search with offline maps

Hi all.
I have been using my Lumia 1520 for a few months now, and one of the Things i really like is the Here Drive+
Soon i will be going on vacation, and thought i would use here drive+ as a GPS in a rental car, but know i have been testing it in offline mode with poor results.
For example, i have downloaded california maps, then when i put it in offline mode and type "Los Angeles" no results, how can that be, am i doing something wrong?

Hmm, weird. I also used here drive once Where there was no signal on my 1520 and the location was just a fem miles away and still no result, but as soon as i Got signal it found the adress. I guess i Will reset the phone When we get the 8.1 on, and hope it helps my here drive issues.